Implement source lock and submission package baseline

docs/schemas/source-lock.schema.json

@@ -0,0 +1,34 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "Guide Board Source Lock",
+  "type": "object",
+  "additionalProperties": false,
+  "required": [
+    "id",
+    "schema_version",
+    "created_at",
+    "framework_refs",
+    "extension_refs",
+    "frameworks",
+    "extensions",
+    "mapping_sets",
+    "profiles",
+    "policy_refs",
+    "authorities",
+    "metadata_hooks"
+  ],
+  "properties": {
+    "id": { "type": "string" },
+    "schema_version": { "type": "string" },
+    "created_at": { "type": "string" },
+    "framework_refs": { "type": "array", "items": { "type": "string" } },
+    "extension_refs": { "type": "array", "items": { "type": "string" } },
+    "frameworks": { "type": "array", "items": { "type": "object" } },
+    "extensions": { "type": "array", "items": { "type": "object" } },
+    "mapping_sets": { "type": "array", "items": { "type": "object" } },
+    "profiles": { "type": "object" },
+    "policy_refs": { "type": "object" },
+    "authorities": { "type": "array", "items": { "type": "object" } },
+    "metadata_hooks": { "type": "object" }
+  }
+}